sci.math Google Group

t.v.s

qaz...@yahoo.com (kupier) — Mon, 01 Dec 2008 19:25:31 UT

Hi
let g be a topological vector space .
is it true that pi_2(g)=0.
why ?

obtaining a numerical evaluation of log(2) with mathematica

lydiajone...@aim.com — Mon, 01 Dec 2008 19:07:26 UT

Hi everyone,
I would like to obtain the numerical value of, say, log(2) using
mathematica. But when I write Ln[2], mathematica returns Ln[2]. I also
tried the following without success.
In[24]:= approximate[Ln[2]]
Out[24]= approximate[Ln[2]]
What should I do?
I appreciate your help and pointers.

Ring of Cartesian products A X B X C = Ring of Cartesian products (A X B) X C ????

s...@address.invalid (sto) — Mon, 01 Dec 2008 18:11:29 UT

If R1 and R2 are (Boolean) rings, then I can show that the set of all
finite, disjoint unions of Cartesian products A1 X A2, A1 in R1, A2 in
R2, is a (Boolean) ring. Then by induction it is simple to show that if
R1, ..., Rn are rings then the set of all finite, disjoint unions of
Cartesian products

consistency of arithmetic

dan.ms.ch...@gmail.com — Mon, 01 Dec 2008 17:58:59 UT

[link]
Is this thing for real? Looks good to me , but I'm no expert .

Known integer sequence for series?

gerry...@gmail.com (Gerry) — Mon, 01 Dec 2008 17:03:48 UT

Hi all,
can someone tell me if there exists an integer sequence for the
following series :
I + x + 1/10*I*x^2 - 9/200*I*x^4 + 57/2000*I*x^6 - 1653/80000*I*x^8 +
64467/4000000*I*x^10 - 1052961/80000000*I*x^12 +
8874957/800000000*I*x^14 - 612372033/64000000000*I*x^16 +
5375265623/640000000000*I*x^18 - 478398640447/64000000000000*I* x^20 +

Yang Mills Paper, Draft of Complete Part I

jyab...@nycap.rr.com (Jay R. Yablon) — Mon, 01 Dec 2008 16:52:50 UT

I have posted below, a current draft of the Yang Mills paper on which I
am presently working:
[link]
This draft is complete, through the development and integration by parts
of a full, Yang-Mills action. This is something of a breakpoint in my

``$me$ always changes" (A Poetic Force of Nature)

mahipal7...@gmail.com — Mon, 01 Dec 2008 16:34:09 UT

Good day,
The links below are just a page in length.
[link] 32768 Bytes
[link] fewer Bytes
Your feedback, objective or otherwise, is welcomed.
Enjo(y)...

Covariant and Contravariant

w...@itd.nrl.navy.mil (J. B. Wood) — Mon, 01 Dec 2008 16:26:19 UT

Hello, all, and while I understand the math behind and use of the above in
vector analysis, I can't figure out why vector components are labeled as
such.
The fact that a vector in space can be represented in space in two ways
(via the metric tensor) as either with "contravariant" components and one

Re: MatheRealism

mueck...@rz.fh-augsburg.de (WM) — Mon, 01 Dec 2008 16:10:19 UT

If every real number had an infinite binary sequence representing it,
then each one would exist independently of the others, like the four
sequences representing the four numbers
0.
/\
0 1
/\ /\
0 1 0 1
0.00, 0.01, 0.10, 0.11.
There can be no doubt that these exist.
The infinite binary tree is not large enough to contain all infinite

Credit Limit Optimization

pjmercu...@gmail.com — Mon, 01 Dec 2008 15:34:49 UT

I am starting a project with regards to credit limit optimization for
a certain lending instrument. Can someone give me some ideas for
building an optimization model that will determine how much money to
lend out to a particular customer?

free Worksheet solution

jon8...@peoplepc.com (Jon G.) — Mon, 01 Dec 2008 15:31:22 UT

I first derived the solution to this problem when I was a patient in the
mental hospital. Math has always partly been a cornerstone of my mental
health. I tested my solution but found it unsuitable, so I went after it
again with a vengeance. Now I get the right answer every time.
The theory for the solution is at my web site,

time stamp

jon8...@peoplepc.com (Jon G.) — Mon, 01 Dec 2008 14:46:38 UT

If you have 3 poles of random lengths, this calculates where they will meet
to form an irregular pyramid.
[link]
This is also *part* of the math used for GPS. There are many other factors
to consider.
transmitter stamp 12:00 at 12:01 receiver
transmitter stamp 12:02 at 12:04 receiver

L2 and dirac delta function as a tempered distribution

vijayagh...@hotmail.com (Vijay Aghera) — Mon, 01 Dec 2008 14:18:38 UT

Hi i'm unsure about the following problem: if f(x)=u(x)*exp{-x*alpha} alpha>0 where u(x)is the step function then does f prime (1st derivative wrt x) belong to lebesgue space with p=2 on the real line.
f prime is a linear combination of a piecewise function and a tempered distribution. The latter is because the derivative of the step function is the dirac delta function. From wikipedia i know all square integrable functions are tempered distributions but i am wondering whether the converse is true. Any suggestions would be terrific. thanks.

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dinacoqeaola...@gmail.com (dinacoqeaola280) — Mon, 01 Dec 2008 13:39:43 UT

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